fix

assets/collection/collection.js

@@ -10,6 +10,14 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
     function filter(value, key, arr) {
         return !support.empty(value);
     }
+
+    function safeArrayKey(key){
+        return support.arr.isKey(key)?Number(key):(''+key);
+    }
+    /**
+     * @param type
+     * @return {kit.Collection}
+     */
     function getSimilarInstance(type) {
         if(type === 'object') {
             return new Collection({});
@@ -60,7 +68,7 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         for(key in this.data) {
             if(!this.data.hasOwnProperty(key)) continue;
             setLastIndex.call(this, key);
-            this.length = this.__keys.push(support.arr.isKey(key)?Number(key):(''+key));
+            this.length = this.__keys.push(safeArrayKey(key));
             this.__values.push(this.data[key]);
         }
     };
@@ -89,7 +97,7 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         return JSON.stringify(this.all());
     };
     Collection.prototype.has = function (key) {
-        return this.data.hasOwnProperty(key) && this.__keys.includes(support.arr.isKey(key)?Number(key):(''+key));
+        return this.data.hasOwnProperty(key) && this.__keys.includes(safeArrayKey(key));
     };
     Collection.prototype.indexKey = function (key) {
         return this.__keys.indexOf(key);
@@ -105,7 +113,7 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
             this.data[key] = this.__values[index = this.indexKey(key)] = value;
             return this;
         }
-        this.length = this.__keys.push(support.arr.isKey(key)?Number(key):(''+key));
+        this.length = this.__keys.push(safeArrayKey(key));
         this.data[key] = this.__values[this.length-1] = value;
         setLastIndex.call(this, key);
         return this;
@@ -132,13 +140,18 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         return this.count() === 0;
     };
     /**
+     * возвращает новый экземпляр коллекции; не изменяет вызываемую коллекцию
+     *
      * @param callback
      * @return {kit.Collection}
      */
     Collection.prototype.map = function (callback) {
         var res = getSimilarInstance(this.__type);
-        for (var key of Object.keys(this.data)) {
-            res.put(key, valueEx(callback, this.data[key], key, this.data));
+        var index, key, value;
+        for(index in this.__keys) {
+            key = this.__keys[index];
+            value = this.__values[index];
+            res.put(key, valueEx(callback, value, key, this.data));
         }
         return res;
     };
@@ -147,13 +160,11 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
      * @return {kit.Collection}
      */
     Collection.prototype.each = function (callback = true) {
-        var BreakException = {}, keys, i, key;
+        var BreakException = {}, i;
         try {
-            keys = Object.keys(this.data);
-            if(keys.length)
-                for (i = 0; i < keys.length; i++) {
-                    key = keys[i];
-                    if(valueEx(callback, this.data[key], key, this.data) === false) {
+            if(this.__keys.length)
+                for (i = 0; i < this.__keys.length; i++) {
+                    if(valueEx(callback, this.__values[i], this.__keys[i], this.data) === false) {
                         throw BreakException;
                     }
                 }
@@ -187,12 +198,51 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
     Collection.prototype.filter = function (callback = filter) {
         var res = getSimilarInstance(this.__type);
         this.each(function (value, key, arr) {
-            if(valueEx(callback, value, key, arr)) {
+            if(!!valueEx(callback, value, key, arr)) {
                 res.put(key, value);
             }
         });
         return res;
     };
+
+    /**
+     * Метод возвращает все элементы коллекции, кроме тех у кого ключи соответствуют заданным
+     * @param keys
+     * @return {kit.Collection}
+     */
+    Collection.prototype.except = function (keys) {
+        var __keys = [], iKey;
+
+        if(!Array.isArray(keys)) {
+            keys = [keys];
+        }
+        for(iKey in keys) {
+            __keys.push(safeArrayKey(keys[iKey]));
+        }
+
+        return this.filter(function (value, key) {
+            return !__keys.includes(key);
+        });
+    };
+    /**
+     * Метод возвращает элементы коллекции с заданными ключами
+     * @param keys
+     * @return {kit.Collection}
+     */
+    Collection.prototype.only = function (keys) {
+        var __keys = [], iKey;
+
+        if(!Array.isArray(keys)) {
+            keys = [keys];
+        }
+        for(iKey in keys) {
+            __keys.push(safeArrayKey(keys[iKey]));
+        }
+
+        return this.filter(function (value, key) {
+            return __keys.includes(key);
+        });
+    };
     Collection.prototype.every = function (callback) {
         var res = true;
         this.each(function (value, key, arr) {